21492311037 has 8 divisors (see below), whose sum is σ = 28800417600. Its totient is φ = 14256205920.

The previous prime is 21492311003. The next prime is 21492311053. The reversal of 21492311037 is 73011329412.

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

It is not a de Polignac number, because 21492311037 - 2⁸ = 21492310781 is a prime.

It is a super-2 number, since 2×21492311037² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21492310989 and 21492311007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21492311837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17999664 + ... + 18000857.

It is an arithmetic number, because the mean of its divisors is an integer number (3600052200).

Almost surely, 2^21492311037 is an apocalyptic number.

It is an amenable number.

21492311037 is a deficient number, since it is larger than the sum of its proper divisors (7308106563).

21492311037 is a wasteful number, since it uses less digits than its factorization.

21492311037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36000723.

The product of its (nonzero) digits is 9072, while the sum is 33.

The spelling of 21492311037 in words is "twenty-one billion, four hundred ninety-two million, three hundred eleven thousand, thirty-seven".