511520415555151 has 4 divisors (see below), whose sum is σ = 511543551875400. Its totient is φ = 511497279234904.

The previous prime is 511520415555137. The next prime is 511520415555203. The reversal of 511520415555151 is 151555514025115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511520415555151 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 (511520415552151) 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, 11568126961 + ... + 11568171178.

It is an arithmetic number, because the mean of its divisors is an integer number (127885887968850).

Almost surely, 2^{511520415555151} is an apocalyptic number.

511520415555151 is a deficient number, since it is larger than the sum of its proper divisors (23136320249).

511520415555151 is a wasteful number, since it uses less digits than its factorization.

511520415555151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23136320248.

The product of its (nonzero) digits is 625000, while the sum is 46.

The spelling of 511520415555151 in words is "five hundred eleven trillion, five hundred twenty billion, four hundred fifteen million, five hundred fifty-five thousand, one hundred fifty-one".