1001640280751 has 4 divisors (see below), whose sum is σ = 1092698488104. Its totient is φ = 910582073400.

The previous prime is 1001640280727. The next prime is 1001640280763. The reversal of 1001640280751 is 1570820461001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001640280751 - 2²⁶ = 1001573171887 is a prime.

It is a super-2 number, since 2×1001640280751² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001640280051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45529103660 + ... + 45529103681.

It is an arithmetic number, because the mean of its divisors is an integer number (273174622026).

Almost surely, 2^{1001640280751} is an apocalyptic number.

1001640280751 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1001640280751 is a deficient number, since it is larger than the sum of its proper divisors (91058207353).

1001640280751 is an equidigital number, since it uses as much as digits as its factorization.

1001640280751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91058207352.

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 1001640280751 in words is "one trillion, one billion, six hundred forty million, two hundred eighty thousand, seven hundred fifty-one".