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80397950976 = 21334719911
BaseRepresentation
bin100101011100000010…
…1110110000000000000
321200112001221002010000
41022320011312000000
52304123333412401
6100533451040000
75544223210350
oct1127005660000
9250461832100
1080397950976
1131107602592
12136b9140000
137773709875
143c69968b60
1521583ca186
hex12b8176000

80397950976 has 560 divisors, whose sum is σ = 289263490560. Its totient is φ = 21737963520.

The previous prime is 80397950921. The next prime is 80397951043. The reversal of 80397950976 is 67905979308.

It is a super-2 number, since 2×803979509762 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

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, 88251961 + ... + 88252871.

Almost surely, 280397950976 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 80397950976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144631745280).

80397950976 is an abundant number, since it is smaller than the sum of its proper divisors (208865539584).

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

80397950976 is an equidigital number, since it uses as much as digits as its factorization.

80397950976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 63.

The spelling of 80397950976 in words is "eighty billion, three hundred ninety-seven million, nine hundred fifty thousand, nine hundred seventy-six".