511457465397 has 4 divisors (see below), whose sum is σ = 681943287200. Its totient is φ = 340971643596.

The previous prime is 511457465381. The next prime is 511457465447. The reversal of 511457465397 is 793564754115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 511457465397 - 2⁴ = 511457465381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511457465317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85242910897 + ... + 85242910902.

It is an arithmetic number, because the mean of its divisors is an integer number (170485821800).

Almost surely, 2^511457465397 is an apocalyptic number.

It is an amenable number.

511457465397 is a deficient number, since it is larger than the sum of its proper divisors (170485821803).

511457465397 is a wasteful number, since it uses less digits than its factorization.

511457465397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170485821802.

The product of its digits is 15876000, while the sum is 57.

The spelling of 511457465397 in words is "five hundred eleven billion, four hundred fifty-seven million, four hundred sixty-five thousand, three hundred ninety-seven".