397419666537 has 16 divisors (see below), whose sum is σ = 535672092672. Its totient is φ = 262064499600.

The previous prime is 397419666491. The next prime is 397419666547. The reversal of 397419666537 is 735666914793.

It is not a de Polignac number, because 397419666537 - 2¹⁹ = 397419142249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397419666547) 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, 749089 + ... + 1164462.

It is an arithmetic number, because the mean of its divisors is an integer number (33479505792).

Almost surely, 2^397419666537 is an apocalyptic number.

It is an amenable number.

397419666537 is a deficient number, since it is larger than the sum of its proper divisors (138252426135).

397419666537 is a wasteful number, since it uses less digits than its factorization.

397419666537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914308.

The product of its digits is 154314720, while the sum is 66.

The spelling of 397419666537 in words is "three hundred ninety-seven billion, four hundred nineteen million, six hundred sixty-six thousand, five hundred thirty-seven".