74210681137 has 4 divisors (see below), whose sum is σ = 78116506480. Its totient is φ = 70304855796.

The previous prime is 74210681113. The next prime is 74210681147. The reversal of 74210681137 is 73118601247.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74210681137 is a prime.

It is a super-2 number, since 2×74210681137² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74210681137.

It is not an unprimeable number, because it can be changed into a prime (74210681107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1952912643 + ... + 1952912680.

It is an arithmetic number, because the mean of its divisors is an integer number (19529126620).

Almost surely, 2^74210681137 is an apocalyptic number.

It is an amenable number.

74210681137 is a deficient number, since it is larger than the sum of its proper divisors (3905825343).

74210681137 is a wasteful number, since it uses less digits than its factorization.

74210681137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905825342.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 74210681137 in words is "seventy-four billion, two hundred ten million, six hundred eighty-one thousand, one hundred thirty-seven".