21400652462 has 8 divisors (see below), whose sum is σ = 36686832816. Its totient is φ = 9171708192.

The previous prime is 21400652461. The next prime is 21400652477. The reversal of 21400652462 is 26425600412.

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

It is a super-2 number, since 2×21400652462² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21400652461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764309003 + ... + 764309030.

It is an arithmetic number, because the mean of its divisors is an integer number (4585854102).

Almost surely, 2^21400652462 is an apocalyptic number.

21400652462 is a deficient number, since it is larger than the sum of its proper divisors (15286180354).

21400652462 is a wasteful number, since it uses less digits than its factorization.

21400652462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528618042.

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 21400652462 in words is "twenty-one billion, four hundred million, six hundred fifty-two thousand, four hundred sixty-two".