155037241281 has 8 divisors (see below), whose sum is σ = 222617577280. Its totient is φ = 95407533072.

The previous prime is 155037241279. The next prime is 155037241297. The reversal of 155037241281 is 182142730551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155037241281 - 2¹ = 155037241279 is a prime.

It is a super-2 number, since 2×155037241281² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 3975313879 = 155037241281 / (1 + 5 + 5 + 0 + 3 + 7 + 2 + 4 + 1 + 2 + 8 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155037241481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1987656901 + ... + 1987656978.

It is an arithmetic number, because the mean of its divisors is an integer number (27827197160).

Almost surely, 2^155037241281 is an apocalyptic number.

It is an amenable number.

155037241281 is a deficient number, since it is larger than the sum of its proper divisors (67580335999).

155037241281 is a wasteful number, since it uses less digits than its factorization.

155037241281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975313895.

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 155037241281 in words is "one hundred fifty-five billion, thirty-seven million, two hundred forty-one thousand, two hundred eighty-one".