621826049761 has 32 divisors (see below), whose sum is σ = 786166530048. Its totient is φ = 480039721920.

The previous prime is 621826049753. The next prime is 621826049797. The reversal of 621826049761 is 167940628126.

It is not a de Polignac number, because 621826049761 - 2³ = 621826049753 is a prime.

It is a super-2 number, since 2×621826049761² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 621826049699 and 621826049708.

It is not an unprimeable number, because it can be changed into a prime (621826049731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1498975 + ... + 1868308.

It is an arithmetic number, because the mean of its divisors is an integer number (24567704064).

Almost surely, 2^621826049761 is an apocalyptic number.

It is an amenable number.

621826049761 is a deficient number, since it is larger than the sum of its proper divisors (164340480287).

621826049761 is a wasteful number, since it uses less digits than its factorization.

621826049761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367381.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 621826049761 in words is "six hundred twenty-one billion, eight hundred twenty-six million, forty-nine thousand, seven hundred sixty-one".