2151615172054 has 16 divisors (see below), whose sum is σ = 3331726755840. Its totient is φ = 1041043619880.

The previous prime is 2151615172039. The next prime is 2151615172073. The reversal of 2151615172054 is 4502715161512.

It is a happy number.

It is a super-2 number, since 2×2151615172054² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2151615171998 and 2151615172016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76677 + ... + 2075839.

It is an arithmetic number, because the mean of its divisors is an integer number (208232922240).

Almost surely, 2^{2151615172054} is an apocalyptic number.

2151615172054 is a deficient number, since it is larger than the sum of its proper divisors (1180111583786).

2151615172054 is a wasteful number, since it uses less digits than its factorization.

2151615172054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016555.

The product of its (nonzero) digits is 84000, while the sum is 40.

The spelling of 2151615172054 in words is "two trillion, one hundred fifty-one billion, six hundred fifteen million, one hundred seventy-two thousand, fifty-four".