77242500371512 has 64 divisors (see below), whose sum is σ = 170058116733120. Its totient is φ = 32196918002688.

The previous prime is 77242500371459. The next prime is 77242500371513. The reversal of 77242500371512 is 21517300524277.

It is a happy number.

It is a super-2 number, since 2×77242500371512² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77242500371513) 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, 1700083 + ... + 12544930.

It is an arithmetic number, because the mean of its divisors is an integer number (2657158073955).

Almost surely, 2^{77242500371512} is an apocalyptic number.

It is an amenable number.

77242500371512 is an abundant number, since it is smaller than the sum of its proper divisors (92815616361608).

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

77242500371512 is a wasteful number, since it uses less digits than its factorization.

77242500371512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14247680 (or 14247676 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 46.

Adding to 77242500371512 its reverse (21517300524277), we get a palindrome (98759800895789).

The spelling of 77242500371512 in words is "seventy-seven trillion, two hundred forty-two billion, five hundred million, three hundred seventy-one thousand, five hundred twelve".