517021420454 has 16 divisors (see below), whose sum is σ = 966897202176. Its totient is φ = 201436917000.

The previous prime is 517021420373. The next prime is 517021420463. The reversal of 517021420454 is 454024120715.

It is a super-2 number, since 2×517021420454² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1678640822 + ... + 1678641129.

It is an arithmetic number, because the mean of its divisors is an integer number (60431075136).

Almost surely, 2^517021420454 is an apocalyptic number.

517021420454 is a deficient number, since it is larger than the sum of its proper divisors (449875781722).

517021420454 is a wasteful number, since it uses less digits than its factorization.

517021420454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357281971.

The product of its (nonzero) digits is 44800, while the sum is 35.

The spelling of 517021420454 in words is "five hundred seventeen billion, twenty-one million, four hundred twenty thousand, four hundred fifty-four".