615403601012 has 12 divisors (see below), whose sum is σ = 1114092726180. Its totient is φ = 297091393536.

The previous prime is 615403600979. The next prime is 615403601027. The reversal of 615403601012 is 210106304516.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 127789090576 + 487614510436 = 357476^2 + 698294^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2652601613 + ... + 2652601844.

It is an arithmetic number, because the mean of its divisors is an integer number (92841060515).

Almost surely, 2^615403601012 is an apocalyptic number.

It is an amenable number.

615403601012 is a deficient number, since it is larger than the sum of its proper divisors (498689125168).

615403601012 is a wasteful number, since it uses less digits than its factorization.

615403601012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305203490 (or 5305203488 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 615403601012 its reverse (210106304516), we get a palindrome (825509905528).

The spelling of 615403601012 in words is "six hundred fifteen billion, four hundred three million, six hundred one thousand, twelve".