153501040555421 has 4 divisors (see below), whose sum is σ = 165308812905852. Its totient is φ = 141693268204992.

The previous prime is 153501040555361. The next prime is 153501040555469. The reversal of 153501040555421 is 124555040105351.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7801994172025 + 145699046383396 = 2793205^2 + 12070586^2 .

It is a cyclic number.

It is not a de Polignac number, because 153501040555421 - 2³⁴ = 153483860686237 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 (153501040555021) 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, 5903886175196 + ... + 5903886175221.

It is an arithmetic number, because the mean of its divisors is an integer number (41327203226463).

Almost surely, 2^{153501040555421} is an apocalyptic number.

It is an amenable number.

153501040555421 is a deficient number, since it is larger than the sum of its proper divisors (11807772350431).

153501040555421 is a wasteful number, since it uses less digits than its factorization.

153501040555421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11807772350430.

The product of its (nonzero) digits is 300000, while the sum is 41.

The spelling of 153501040555421 in words is "one hundred fifty-three trillion, five hundred one billion, forty million, five hundred fifty-five thousand, four hundred twenty-one".