155011421551453 has 16 divisors (see below), whose sum is σ = 159389395925760. Its totient is φ = 150643471994496.

The previous prime is 155011421551387. The next prime is 155011421551477. The reversal of 155011421551453 is 354155124110551.

It is a cyclic number.

It is not a de Polignac number, because 155011421551453 - 2⁹ = 155011421550941 is a prime.

It is a super-2 number, since 2×155011421551453² (a number of 29 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 (155011421551853) 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, 105813025 + ... + 107267977.

It is an arithmetic number, because the mean of its divisors is an integer number (9961837245360).

Almost surely, 2^{155011421551453} is an apocalyptic number.

It is an amenable number.

155011421551453 is a deficient number, since it is larger than the sum of its proper divisors (4377974374307).

155011421551453 is a wasteful number, since it uses less digits than its factorization.

155011421551453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458396.

The product of its (nonzero) digits is 300000, while the sum is 43.

The spelling of 155011421551453 in words is "one hundred fifty-five trillion, eleven billion, four hundred twenty-one million, five hundred fifty-one thousand, four hundred fifty-three".