77693093240 has 32 divisors (see below), whose sum is σ = 199782240480. Its totient is φ = 26637631872.

The previous prime is 77693093221. The next prime is 77693093243. The reversal of 77693093240 is 4239039677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77693093243) 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, 138737387 + ... + 138737946.

It is an arithmetic number, because the mean of its divisors is an integer number (6243195015).

Almost surely, 2^77693093240 is an apocalyptic number.

77693093240 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

77693093240 is an abundant number, since it is smaller than the sum of its proper divisors (122089147240).

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

77693093240 is a wasteful number, since it uses less digits than its factorization.

77693093240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277475351 (or 277475347 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 50.

The spelling of 77693093240 in words is "seventy-seven billion, six hundred ninety-three million, ninety-three thousand, two hundred forty".