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5421611664 = 2433745227
BaseRepresentation
bin1010000110010011…
…10011101010010000
3111222211201102001000
411003021303222100
542100413033124
62253551542000
7251231640000
oct50311635220
914884642030
105421611664
1123323a40a7
12107382a900
136852c9051
14396090000
1521ae886c9
hex143273a90

5421611664 has 200 divisors, whose sum is σ = 18158098720. Its totient is φ = 1548735552.

The previous prime is 5421611651. The next prime is 5421611693. The reversal of 5421611664 is 4661161245.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1034619 + ... + 1039845.

Almost surely, 25421611664 is an apocalyptic number.

5421611664 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5421611664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9079049360).

5421611664 is an abundant number, since it is smaller than the sum of its proper divisors (12736487056).

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

5421611664 is an equidigital number, since it uses as much as digits as its factorization.

5421611664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5272 (or 5239 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 5421611664 is about 73631.5941970565. The cubic root of 5421611664 is about 1756.7480048961.

The spelling of 5421611664 in words is "five billion, four hundred twenty-one million, six hundred eleven thousand, six hundred sixty-four".