77154234140 has 24 divisors (see below), whose sum is σ = 162059376192. Its totient is φ = 30854934720.

The previous prime is 77154234121. The next prime is 77154234181. The reversal of 77154234140 is 4143245177.

It is a junction number, because it is equal to n+sod(n) for n = 77154234094 and 77154234103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328319 + ... + 511958.

It is an arithmetic number, because the mean of its divisors is an integer number (6752474008).

Almost surely, 2^77154234140 is an apocalyptic number.

It is an amenable number.

77154234140 is an abundant number, since it is smaller than the sum of its proper divisors (84905142052).

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

77154234140 is a wasteful number, since it uses less digits than its factorization.

77154234140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844877 (or 844875 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The spelling of 77154234140 in words is "seventy-seven billion, one hundred fifty-four million, two hundred thirty-four thousand, one hundred forty".