77251612247740 has 144 divisors (see below), whose sum is σ = 196366276778112. Its totient is φ = 25433620552704.

The previous prime is 77251612247731. The next prime is 77251612247741. The reversal of 77251612247740 is 4774221615277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77251612247741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13381417 + ... + 18263776.

It is an arithmetic number, because the mean of its divisors is an integer number (1363654699848).

Almost surely, 2^{77251612247740} is an apocalyptic number.

77251612247740 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

77251612247740 is an abundant number, since it is smaller than the sum of its proper divisors (119114664530372).

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

77251612247740 is a wasteful number, since it uses less digits than its factorization.

77251612247740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31645316 (or 31645307 counting only the distinct ones).

The product of its (nonzero) digits is 9219840, while the sum is 55.

The spelling of 77251612247740 in words is "seventy-seven trillion, two hundred fifty-one billion, six hundred twelve million, two hundred forty-seven thousand, seven hundred forty".