21054377535 has 8 divisors (see below), whose sum is σ = 33687004080. Its totient is φ = 11229001344.

The previous prime is 21054377507. The next prime is 21054377557. The reversal of 21054377535 is 53577345012.

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

It is not a de Polignac number, because 21054377535 - 2¹¹ = 21054375487 is a prime.

It is a congruent number.

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, 701812570 + ... + 701812599.

It is an arithmetic number, because the mean of its divisors is an integer number (4210875510).

Almost surely, 2^21054377535 is an apocalyptic number.

21054377535 is a deficient number, since it is larger than the sum of its proper divisors (12632626545).

21054377535 is a wasteful number, since it uses less digits than its factorization.

21054377535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403625177.

The product of its (nonzero) digits is 441000, while the sum is 42.

The spelling of 21054377535 in words is "twenty-one billion, fifty-four million, three hundred seventy-seven thousand, five hundred thirty-five".