615394497428 has 12 divisors (see below), whose sum is σ = 1085420216832. Its totient is φ = 305274435480.

The previous prime is 615394497409. The next prime is 615394497461. The reversal of 615394497428 is 824794493516.

615394497428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 605702738 + ... + 605703753.

It is an arithmetic number, because the mean of its divisors is an integer number (90451684736).

Almost surely, 2^615394497428 is an apocalyptic number.

It is an amenable number.

615394497428 is a deficient number, since it is larger than the sum of its proper divisors (470025719404).

615394497428 is a wasteful number, since it uses less digits than its factorization.

615394497428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211406622 (or 1211406620 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 62.

The spelling of 615394497428 in words is "six hundred fifteen billion, three hundred ninety-four million, four hundred ninety-seven thousand, four hundred twenty-eight".