77234146240 has 56 divisors (see below), whose sum is σ = 185699460960. Its totient is φ = 30593707008.

The previous prime is 77234146193. The next prime is 77234146247. The reversal of 77234146240 is 4264143277.

It is a super-2 number, since 2×77234146240² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 77234146193 and 77234146202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77234146247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1138675 + ... + 1204594.

Almost surely, 2^77234146240 is an apocalyptic number.

It is an amenable number.

77234146240 is an abundant number, since it is smaller than the sum of its proper divisors (108465314720).

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

77234146240 is a wasteful number, since it uses less digits than its factorization.

77234146240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343389 (or 2343379 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 40.

The spelling of 77234146240 in words is "seventy-seven billion, two hundred thirty-four million, one hundred forty-six thousand, two hundred forty".