10591997400 has 480 divisors, whose sum is σ = 38793142080. Its totient is φ = 2674944000.

The previous prime is 10591997399. The next prime is 10591997453. The reversal of 10591997400 is 479919501.

10591997400 is a `hidden beast` number, since 1 + 0 + 59 + 199 + 7 + 400 = 666.

It is a super-2 number, since 2×10591997400² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 24575185 + ... + 24575615.

It is an arithmetic number, because the mean of its divisors is an integer number (80819046).

Almost surely, 2^10591997400 is an apocalyptic number.

10591997400 is a gapful number since it is divisible by the number (10) 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 10591997400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19396571040).

10591997400 is an abundant number, since it is smaller than the sum of its proper divisors (28201144680).

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

10591997400 is a wasteful number, since it uses less digits than its factorization.

10591997400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The spelling of 10591997400 in words is "ten billion, five hundred ninety-one million, nine hundred ninety-seven thousand, four hundred".