61506505611051 has 8 divisors (see below), whose sum is σ = 82009258289664. Its totient is φ = 41004045003240.

The previous prime is 61506505611049. The next prime is 61506505611071. The reversal of 61506505611051 is 15011650560516.

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

It is not a de Polignac number, because 61506505611051 - 2¹ = 61506505611049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61506505610994 and 61506505611012.

It is not an unprimeable number, because it can be changed into a prime (61506505611071) 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, 72525855 + ... + 73369016.

It is an arithmetic number, because the mean of its divisors is an integer number (10251157286208).

Almost surely, 2^{61506505611051} is an apocalyptic number.

61506505611051 is a deficient number, since it is larger than the sum of its proper divisors (20502752678613).

61506505611051 is a wasteful number, since it uses less digits than its factorization.

61506505611051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146035401.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 61506505611051 in words is "sixty-one trillion, five hundred six billion, five hundred five million, six hundred eleven thousand, fifty-one".