1642621265373 has 16 divisors (see below), whose sum is σ = 2392220692800. Its totient is φ = 994297457280.

The previous prime is 1642621265347. The next prime is 1642621265407. The reversal of 1642621265373 is 3735621262461.

It is a happy number.

It is not a de Polignac number, because 1642621265373 - 2⁹ = 1642621264861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642621265303) 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, 30737458 + ... + 30790851.

It is an arithmetic number, because the mean of its divisors is an integer number (149513793300).

Almost surely, 2^{1642621265373} is an apocalyptic number.

It is an amenable number.

1642621265373 is a deficient number, since it is larger than the sum of its proper divisors (749599427427).

1642621265373 is a wasteful number, since it uses less digits than its factorization.

1642621265373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61529132.

The product of its digits is 2177280, while the sum is 48.

The spelling of 1642621265373 in words is "one trillion, six hundred forty-two billion, six hundred twenty-one million, two hundred sixty-five thousand, three hundred seventy-three".