21352467154 has 16 divisors (see below), whose sum is σ = 32661299520. Its totient is φ = 10467047920.

The previous prime is 21352467139. The next prime is 21352467173. The reversal of 21352467154 is 45176425312.

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, 394609 + ... + 445444.

It is an arithmetic number, because the mean of its divisors is an integer number (2041331220).

Almost surely, 2^21352467154 is an apocalyptic number.

21352467154 is a deficient number, since it is larger than the sum of its proper divisors (11308832366).

21352467154 is a wasteful number, since it uses less digits than its factorization.

21352467154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840305.

The product of its digits is 201600, while the sum is 40.

The spelling of 21352467154 in words is "twenty-one billion, three hundred fifty-two million, four hundred sixty-seven thousand, one hundred fifty-four".