511212340091 has 8 divisors (see below), whose sum is σ = 541808681184. Its totient is φ = 480674335360.

The previous prime is 511212340073. The next prime is 511212340097. The reversal of 511212340091 is 190043212115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 511212340091 - 2²² = 511208145787 is a prime.

It is a super-2 number, since 2×511212340091² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511212340097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14566040 + ... + 14601093.

It is an arithmetic number, because the mean of its divisors is an integer number (67726085148).

Almost surely, 2^511212340091 is an apocalyptic number.

511212340091 is a deficient number, since it is larger than the sum of its proper divisors (30596341093).

511212340091 is a wasteful number, since it uses less digits than its factorization.

511212340091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29168181.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 511212340091 in words is "five hundred eleven billion, two hundred twelve million, three hundred forty thousand, ninety-one".