77049023040 has 448 divisors, whose sum is σ = 299886624000. Its totient is φ = 18466652160.

The previous prime is 77049023033. The next prime is 77049023053. The reversal of 77049023040 is 4032094077.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 77049022986 and 77049023004.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8454006 + ... + 8463114.

Almost surely, 2^77049023040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77049023040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149943312000).

77049023040 is an abundant number, since it is smaller than the sum of its proper divisors (222837600960).

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

77049023040 is a wasteful number, since it uses less digits than its factorization.

77049023040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9235 (or 9219 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The spelling of 77049023040 in words is "seventy-seven billion, forty-nine million, twenty-three thousand, forty".