77400401503782 has 16 divisors (see below), whose sum is σ = 176915203437312. Its totient is φ = 22114400429640.

The previous prime is 77400401503781. The next prime is 77400401503787. The reversal of 77400401503782 is 28730510400477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77400401503781) 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, 921433351194 + ... + 921433351277.

It is an arithmetic number, because the mean of its divisors is an integer number (11057200214832).

Almost surely, 2^{77400401503782} is an apocalyptic number.

77400401503782 is an abundant number, since it is smaller than the sum of its proper divisors (99514801933530).

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

77400401503782 is a wasteful number, since it uses less digits than its factorization.

77400401503782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842866702483.

The product of its (nonzero) digits is 1317120, while the sum is 48.

The spelling of 77400401503782 in words is "seventy-seven trillion, four hundred billion, four hundred one million, five hundred three thousand, seven hundred eighty-two".