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72811897704 = 233372134112907
BaseRepresentation
bin100001111001111101…
…1010110001101101000
320221221101102122101000
41003303323112031220
52143104321211304
653241015355000
75155226630100
oct1036373261550
9227841378330
1072811897704
1128974466477
1212140682a60
136b34b7c150
14374a256200
151d623ea939
hex10f3ed6368

72811897704 has 384 divisors, whose sum is σ = 259574716800. Its totient is φ = 18733317120.

The previous prime is 72811897681. The next prime is 72811897727. The reversal of 72811897704 is 40779811827.

It is an interprime number because it is at equal distance from previous prime (72811897681) and next prime (72811897727).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5634819 + ... + 5647725.

It is an arithmetic number, because the mean of its divisors is an integer number (675975825).

Almost surely, 272811897704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72811897704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129787358400).

72811897704 is an abundant number, since it is smaller than the sum of its proper divisors (186762819096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72811897704 is a wasteful number, since it uses less digits than its factorization.

72811897704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12990 (or 12973 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 54.

The spelling of 72811897704 in words is "seventy-two billion, eight hundred eleven million, eight hundred ninety-seven thousand, seven hundred four".