561288151626031 has 4 divisors (see below), whose sum is σ = 561296596306392. Its totient is φ = 561279706945672.

The previous prime is 561288151626001. The next prime is 561288151626053. The reversal of 561288151626031 is 130626151882165.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561288151626031 is a prime.

It is a super-2 number, since 2×561288151626031² (a number of 30 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 (561288151626001) 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, 4222240480 + ... + 4222373413.

It is an arithmetic number, because the mean of its divisors is an integer number (140324149076598).

Almost surely, 2^{561288151626031} is an apocalyptic number.

561288151626031 is a deficient number, since it is larger than the sum of its proper divisors (8444680361).

561288151626031 is an equidigital number, since it uses as much as digits as its factorization.

561288151626031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8444680360.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 561288151626031 in words is "five hundred sixty-one trillion, two hundred eighty-eight billion, one hundred fifty-one million, six hundred twenty-six thousand, thirty-one".