2215620651055 has 32 divisors (see below), whose sum is σ = 3136724287488. Its totient is φ = 1470207715200.

The previous prime is 2215620651001. The next prime is 2215620651059. The reversal of 2215620651055 is 5501560265122.

It is not a de Polignac number, because 2215620651055 - 2²⁵ = 2215587096623 is a prime.

It is a super-2 number, since 2×2215620651055² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2215620650999 and 2215620651017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215620651059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41792665 + ... + 41845645.

It is an arithmetic number, because the mean of its divisors is an integer number (98022633984).

Almost surely, 2^{2215620651055} is an apocalyptic number.

2215620651055 is a deficient number, since it is larger than the sum of its proper divisors (921103636433).

2215620651055 is a wasteful number, since it uses less digits than its factorization.

2215620651055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91567.

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 2215620651055 in words is "two trillion, two hundred fifteen billion, six hundred twenty million, six hundred fifty-one thousand, fifty-five".