1551920540941 has 4 divisors (see below), whose sum is σ = 1551923159584. Its totient is φ = 1551917922300.

The previous prime is 1551920540927. The next prime is 1551920540971. The reversal of 1551920540941 is 1490450291551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1551920540941 - 2⁵ = 1551920540909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1551920540891 and 1551920540900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551920540971) 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, 50176 + ... + 1762486.

It is an arithmetic number, because the mean of its divisors is an integer number (387980789896).

Almost surely, 2^{1551920540941} is an apocalyptic number.

It is an amenable number.

1551920540941 is a deficient number, since it is larger than the sum of its proper divisors (2618643).

1551920540941 is an equidigital number, since it uses as much as digits as its factorization.

1551920540941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618642.

The product of its (nonzero) digits is 324000, while the sum is 46.

The spelling of 1551920540941 in words is "one trillion, five hundred fifty-one billion, nine hundred twenty million, five hundred forty thousand, nine hundred forty-one".