1540955547957 has 32 divisors (see below), whose sum is σ = 2413814169600. Its totient is φ = 856251527040.

The previous prime is 1540955547931. The next prime is 1540955548007. The reversal of 1540955547957 is 7597455590451.

It is not a de Polignac number, because 1540955547957 - 2¹⁵ = 1540955515189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540955547757) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6969957 + ... + 7187642.

It is an arithmetic number, because the mean of its divisors is an integer number (75431692800).

Almost surely, 2^{1540955547957} is an apocalyptic number.

It is an amenable number.

1540955547957 is a deficient number, since it is larger than the sum of its proper divisors (872858621643).

1540955547957 is a wasteful number, since it uses less digits than its factorization.

1540955547957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14157753.

The product of its (nonzero) digits is 198450000, while the sum is 66.

The spelling of 1540955547957 in words is "one trillion, five hundred forty billion, nine hundred fifty-five million, five hundred forty-seven thousand, nine hundred fifty-seven".