77654074950 has 96 divisors (see below), whose sum is σ = 214135178400. Its totient is φ = 20692748160.

The previous prime is 77654074933. The next prime is 77654074951. The reversal of 77654074950 is 5947045677.

77654074950 is a `hidden beast` number, since 7 + 7 + 6 + 540 + 7 + 4 + 95 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77654074951) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1909024 + ... + 1949276.

It is an arithmetic number, because the mean of its divisors is an integer number (2230574775).

Almost surely, 2^77654074950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77654074950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107067589200).

77654074950 is an abundant number, since it is smaller than the sum of its proper divisors (136481103450).

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

77654074950 is a wasteful number, since it uses less digits than its factorization.

77654074950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41703 (or 41692 counting only the distinct ones).

The product of its (nonzero) digits is 7408800, while the sum is 54.

The spelling of 77654074950 in words is "seventy-seven billion, six hundred fifty-four million, seventy-four thousand, nine hundred fifty".