74627251081 has 16 divisors (see below), whose sum is σ = 77324163840. Its totient is φ = 71974985040.

The previous prime is 74627251079. The next prime is 74627251141. The reversal of 74627251081 is 18015272647.

It is a cyclic number.

It is not a de Polignac number, because 74627251081 - 2¹ = 74627251079 is a prime.

It is a super-2 number, since 2×74627251081² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74627251021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8457690 + ... + 8466508.

It is an arithmetic number, because the mean of its divisors is an integer number (4832760240).

Almost surely, 2^74627251081 is an apocalyptic number.

It is an amenable number.

74627251081 is a deficient number, since it is larger than the sum of its proper divisors (2696912759).

74627251081 is a wasteful number, since it uses less digits than its factorization.

74627251081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11316.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 74627251081 in words is "seventy-four billion, six hundred twenty-seven million, two hundred fifty-one thousand, eighty-one".