802640091374121 has 128 divisors (see below), whose sum is σ = 1443353122455552. Its totient is φ = 383153379840000.

The previous prime is 802640091374053. The next prime is 802640091374137. The reversal of 802640091374121 is 121473190046208.

It is not a de Polignac number, because 802640091374121 - 2¹³ = 802640091365929 is a prime.

It is a super-2 number, since 2×802640091374121² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (802640091374621) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2118147771 + ... + 2118526671.

It is an arithmetic number, because the mean of its divisors is an integer number (11276196269184).

Almost surely, 2^{802640091374121} is an apocalyptic number.

It is an amenable number.

802640091374121 is a deficient number, since it is larger than the sum of its proper divisors (640713031081431).

802640091374121 is a wasteful number, since it uses less digits than its factorization.

802640091374121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382103.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 802640091374121 in words is "eight hundred two trillion, six hundred forty billion, ninety-one million, three hundred seventy-four thousand, one hundred twenty-one".