77141422540 has 48 divisors (see below), whose sum is σ = 199380912192. Its totient is φ = 24413988096.

The previous prime is 77141422531. The next prime is 77141422541. The reversal of 77141422540 is 4522414177.

It is a self number, because there is not a number n which added to its sum of digits gives 77141422540.

It is not an unprimeable number, because it can be changed into a prime (77141422541) 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, 21190879 + ... + 21194518.

It is an arithmetic number, because the mean of its divisors is an integer number (4153769004).

Almost surely, 2^77141422540 is an apocalyptic number.

77141422540 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

77141422540 is an abundant number, since it is smaller than the sum of its proper divisors (122239489652).

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

77141422540 is a wasteful number, since it uses less digits than its factorization.

77141422540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42385426 (or 42385424 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The spelling of 77141422540 in words is "seventy-seven billion, one hundred forty-one million, four hundred twenty-two thousand, five hundred forty".