77574665340 has 72 divisors (see below), whose sum is σ = 243423966240. Its totient is φ = 19973245824.

The previous prime is 77574665339. The next prime is 77574665341. The reversal of 77574665340 is 4356647577.

It is a happy number.

77574665340 is a `hidden beast` number, since 7 + 7 + 574 + 6 + 65 + 3 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (77574665339) and next prime (77574665341).

It is a super-2 number, since 2×77574665340² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77574665341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7425304 + ... + 7435743.

It is an arithmetic number, because the mean of its divisors is an integer number (3380888420).

Almost surely, 2^77574665340 is an apocalyptic number.

It is an amenable number.

77574665340 is an abundant number, since it is smaller than the sum of its proper divisors (165849300900).

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

77574665340 is a wasteful number, since it uses less digits than its factorization.

77574665340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14861091 (or 14861086 counting only the distinct ones).

The product of its (nonzero) digits is 14817600, while the sum is 54.

The spelling of 77574665340 in words is "seventy-seven billion, five hundred seventy-four million, six hundred sixty-five thousand, three hundred forty".