22154664661402 has 96 divisors (see below), whose sum is σ = 41811625215360. Its totient is φ = 8726600292480.

The previous prime is 22154664661391. The next prime is 22154664661417. The reversal of 22154664661402 is 20416646645122.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 274569088 + ... + 274649764.

It is an arithmetic number, because the mean of its divisors is an integer number (435537762660).

Almost surely, 2^{22154664661402} is an apocalyptic number.

22154664661402 is a deficient number, since it is larger than the sum of its proper divisors (19656960553958).

22154664661402 is a wasteful number, since it uses less digits than its factorization.

22154664661402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81636 (or 81629 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 22154664661402 in words is "twenty-two trillion, one hundred fifty-four billion, six hundred sixty-four million, six hundred sixty-one thousand, four hundred two".