740077543638 has 320 divisors, whose sum is σ = 1834325678592. Its totient is φ = 222304642560.

The previous prime is 740077543637. The next prime is 740077543651. The reversal of 740077543638 is 836345770047.

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 (740077543631) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 776576170 + ... + 776577122.

Almost surely, 2^740077543638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 740077543638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (917162839296).

740077543638 is an abundant number, since it is smaller than the sum of its proper divisors (1094248134954).

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

740077543638 is a wasteful number, since it uses less digits than its factorization.

740077543638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1192 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 54.

The spelling of 740077543638 in words is "seven hundred forty billion, seventy-seven million, five hundred forty-three thousand, six hundred thirty-eight".