2215155425640 has 64 divisors (see below), whose sum is σ = 6646180464000. Its totient is φ = 590644630272.

The previous prime is 2215155425537. The next prime is 2215155425653. The reversal of 2215155425640 is 465245515122.

It is a junction number, because it is equal to n+sod(n) for n = 2215155425592 and 2215155425601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134629 + ... + 2109131.

It is an arithmetic number, because the mean of its divisors is an integer number (103846569750).

Almost surely, 2^{2215155425640} is an apocalyptic number.

2215155425640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215155425640 is an abundant number, since it is smaller than the sum of its proper divisors (4431025038360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2215155425640 is a wasteful number, since it uses less digits than its factorization.

2215155425640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983866 (or 1983862 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 42.

The spelling of 2215155425640 in words is "two trillion, two hundred fifteen billion, one hundred fifty-five million, four hundred twenty-five thousand, six hundred forty".