2155502012051 has 8 divisors (see below), whose sum is σ = 2282910000480. Its totient is φ = 2028162218368.

The previous prime is 2155502012047. The next prime is 2155502012113. The reversal of 2155502012051 is 1502102055512.

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

It is not a de Polignac number, because 2155502012051 - 2² = 2155502012047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155502011051) 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, 16983596 + ... + 17110041.

It is an arithmetic number, because the mean of its divisors is an integer number (285363750060).

Almost surely, 2^{2155502012051} is an apocalyptic number.

2155502012051 is a deficient number, since it is larger than the sum of its proper divisors (127407988429).

2155502012051 is a wasteful number, since it uses less digits than its factorization.

2155502012051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34097373.

The product of its (nonzero) digits is 5000, while the sum is 29.

Adding to 2155502012051 its reverse (1502102055512), we get a palindrome (3657604067563).

The spelling of 2155502012051 in words is "two trillion, one hundred fifty-five billion, five hundred two million, twelve thousand, fifty-one".