620400111144 has 64 divisors (see below), whose sum is σ = 1692292824000. Its totient is φ = 187967531520.

The previous prime is 620400111143. The next prime is 620400111161. The reversal of 620400111144 is 441111004026.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (620400111143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1349212 + ... + 1749620.

It is an arithmetic number, because the mean of its divisors is an integer number (26442075375).

Almost surely, 2^620400111144 is an apocalyptic number.

It is an amenable number.

620400111144 is an abundant number, since it is smaller than the sum of its proper divisors (1071892712856).

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

620400111144 is a wasteful number, since it uses less digits than its factorization.

620400111144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406298 (or 406294 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The spelling of 620400111144 in words is "six hundred twenty billion, four hundred million, one hundred eleven thousand, one hundred forty-four".