15541543122053 has 16 divisors (see below), whose sum is σ = 16751745400320. Its totient is φ = 14333446181376.

The previous prime is 15541543121983. The next prime is 15541543122073. The reversal of 15541543122053 is 35022134514551.

It is a cyclic number.

It is not a de Polignac number, because 15541543122053 - 2³⁶ = 15472823645317 is a prime.

It is a super-2 number, since 2×15541543122053² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15541543122053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15541543122073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69295028 + ... + 69518946.

It is an arithmetic number, because the mean of its divisors is an integer number (1046984087520).

Almost surely, 2^{15541543122053} is an apocalyptic number.

15541543122053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15541543122053 is a deficient number, since it is larger than the sum of its proper divisors (1210202278267).

15541543122053 is a wasteful number, since it uses less digits than its factorization.

15541543122053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228596.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 15541543122053 in words is "fifteen trillion, five hundred forty-one billion, five hundred forty-three million, one hundred twenty-two thousand, fifty-three".