531101220445445 has 32 divisors (see below), whose sum is σ = 686707738472448. Its totient is φ = 391991275116288.

The previous prime is 531101220445421. The next prime is 531101220445457. The reversal of 531101220445445 is 544544022101135.

It is a cyclic number.

It is not a de Polignac number, because 531101220445445 - 2¹² = 531101220441349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1070591852 + ... + 1071087818.

It is an arithmetic number, because the mean of its divisors is an integer number (21459616827264).

Almost surely, 2^{531101220445445} is an apocalyptic number.

It is an amenable number.

531101220445445 is a deficient number, since it is larger than the sum of its proper divisors (155606518027003).

531101220445445 is a wasteful number, since it uses less digits than its factorization.

531101220445445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504629.

The product of its (nonzero) digits is 384000, while the sum is 41.

The spelling of 531101220445445 in words is "five hundred thirty-one trillion, one hundred one billion, two hundred twenty million, four hundred forty-five thousand, four hundred forty-five".