77225888540 has 24 divisors (see below), whose sum is σ = 162458408112. Its totient is φ = 30836252160.

The previous prime is 77225888527. The next prime is 77225888543. The reversal of 77225888540 is 4588852277.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77225888543) 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, 3369749 + ... + 3392588.

It is an arithmetic number, because the mean of its divisors is an integer number (6769100338).

Almost surely, 2^77225888540 is an apocalyptic number.

It is an amenable number.

77225888540 is an abundant number, since it is smaller than the sum of its proper divisors (85232519572).

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

77225888540 is a wasteful number, since it uses less digits than its factorization.

77225888540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762917 (or 6762915 counting only the distinct ones).

The product of its (nonzero) digits is 10035200, while the sum is 56.

The spelling of 77225888540 in words is "seventy-seven billion, two hundred twenty-five million, eight hundred eighty-eight thousand, five hundred forty".