628974357121 has 16 divisors (see below), whose sum is σ = 708321581568. Its totient is φ = 553323513600.

The previous prime is 628974357119. The next prime is 628974357197. The reversal of 628974357121 is 121753479826.

It is not a de Polignac number, because 628974357121 - 2¹ = 628974357119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628974357101) 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, 11796895 + ... + 11850091.

It is an arithmetic number, because the mean of its divisors is an integer number (44270098848).

Almost surely, 2^628974357121 is an apocalyptic number.

It is an amenable number.

628974357121 is a deficient number, since it is larger than the sum of its proper divisors (79347224447).

628974357121 is a wasteful number, since it uses less digits than its factorization.

628974357121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87912.

The product of its digits is 5080320, while the sum is 55.

The spelling of 628974357121 in words is "six hundred twenty-eight billion, nine hundred seventy-four million, three hundred fifty-seven thousand, one hundred twenty-one".