21310801511654 has 8 divisors (see below), whose sum is σ = 32014709404920. Its totient is φ = 10639231710016.

The previous prime is 21310801511599. The next prime is 21310801511711. The reversal of 21310801511654 is 45611510801312.

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

It is a super-2 number, since 2×21310801511654² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8084521259 + ... + 8084523894.

It is an arithmetic number, because the mean of its divisors is an integer number (4001838675615).

Almost surely, 2^{21310801511654} is an apocalyptic number.

21310801511654 is a deficient number, since it is larger than the sum of its proper divisors (10703907893266).

21310801511654 is a wasteful number, since it uses less digits than its factorization.

21310801511654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16169045814.

The product of its (nonzero) digits is 28800, while the sum is 38.

The spelling of 21310801511654 in words is "twenty-one trillion, three hundred ten billion, eight hundred one million, five hundred eleven thousand, six hundred fifty-four".