1012155642541 has 32 divisors (see below), whose sum is σ = 1074346560000. Its totient is φ = 951634759680.

The previous prime is 1012155642517. The next prime is 1012155642551. The reversal of 1012155642541 is 1452465512101.

It is a cyclic number.

It is not a de Polignac number, because 1012155642541 - 2⁷ = 1012155642413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012155642541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012155642551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293461785 + ... + 293465233.

It is an arithmetic number, because the mean of its divisors is an integer number (33573330000).

Almost surely, 2^{1012155642541} is an apocalyptic number.

It is an amenable number.

1012155642541 is a deficient number, since it is larger than the sum of its proper divisors (62190917459).

1012155642541 is a wasteful number, since it uses less digits than its factorization.

1012155642541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4429.

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 1012155642541 in words is "one trillion, twelve billion, one hundred fifty-five million, six hundred forty-two thousand, five hundred forty-one".