2631622126021 has 16 divisors (see below), whose sum is σ = 3020976659584. Its totient is φ = 2245639624704.

The previous prime is 2631622126019. The next prime is 2631622126039. The reversal of 2631622126021 is 1206212261362.

It is not a de Polignac number, because 2631622126021 - 2¹ = 2631622126019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631622126421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758806 + ... + 2416408.

It is an arithmetic number, because the mean of its divisors is an integer number (188811041224).

Almost surely, 2^{2631622126021} is an apocalyptic number.

It is an amenable number.

2631622126021 is a deficient number, since it is larger than the sum of its proper divisors (389354533563).

2631622126021 is a wasteful number, since it uses less digits than its factorization.

2631622126021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658620.

The product of its (nonzero) digits is 20736, while the sum is 34.

Adding to 2631622126021 its reverse (1206212261362), we get a palindrome (3837834387383).

The spelling of 2631622126021 in words is "two trillion, six hundred thirty-one billion, six hundred twenty-two million, one hundred twenty-six thousand, twenty-one".