623540140410 has 32 divisors (see below), whose sum is σ = 1632541459392. Its totient is φ = 151161246080.

The previous prime is 623540140409. The next prime is 623540140441. The reversal of 623540140410 is 14041045326.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 944757459 + ... + 944758118.

It is an arithmetic number, because the mean of its divisors is an integer number (51016920606).

Almost surely, 2^623540140410 is an apocalyptic number.

623540140410 is an abundant number, since it is smaller than the sum of its proper divisors (1009001318982).

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

623540140410 is a wasteful number, since it uses less digits than its factorization.

623540140410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889515598.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 623540140410 its reverse (14041045326), we get a palindrome (637581185736).

The spelling of 623540140410 in words is "six hundred twenty-three billion, five hundred forty million, one hundred forty thousand, four hundred ten".