151540635656 has 16 divisors (see below), whose sum is σ = 284146795500. Its totient is φ = 75768156864.

The previous prime is 151540635641. The next prime is 151540635667. The reversal of 151540635656 is 656536045151.

It can be written as a sum of positive squares in 2 ways, for example, as 130068422500 + 21472213156 = 360650^2 + 146534^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 151540635656.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50270 + ... + 552818.

Almost surely, 2^151540635656 is an apocalyptic number.

It is an amenable number.

151540635656 is a deficient number, since it is larger than the sum of its proper divisors (132606159844).

151540635656 is a wasteful number, since it uses less digits than its factorization.

151540635656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540248 (or 540244 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 47.

The spelling of 151540635656 in words is "one hundred fifty-one billion, five hundred forty million, six hundred thirty-five thousand, six hundred fifty-six".