747477642240 has 1848 divisors, whose sum is σ = 3226002598512. Its totient is φ = 165542952960.

The previous prime is 747477642227. The next prime is 747477642293. The reversal of 747477642240 is 42246774747.

747477642240 is a `hidden beast` number, since 7 + 474 + 77 + 64 + 2 + 2 + 40 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 11156382687 + ... + 11156382753.

Almost surely, 2^747477642240 is an apocalyptic number.

747477642240 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747477642240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1613001299256).

747477642240 is an abundant number, since it is smaller than the sum of its proper divisors (2478524956272).

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

747477642240 is an equidigital number, since it uses as much as digits as its factorization.

747477642240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 14751744, while the sum is 54.

The spelling of 747477642240 in words is "seven hundred forty-seven billion, four hundred seventy-seven million, six hundred forty-two thousand, two hundred forty".