155025151142440 has 64 divisors (see below), whose sum is σ = 356958541209600. Its totient is φ = 60561149306112.

The previous prime is 155025151142431. The next prime is 155025151142467. The reversal of 155025151142440 is 44241151520551.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 155025151142393 and 155025151142402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10228441 + ... + 20363479.

It is an arithmetic number, because the mean of its divisors is an integer number (5577477206400).

Almost surely, 2^{155025151142440} is an apocalyptic number.

155025151142440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155025151142440 is an abundant number, since it is smaller than the sum of its proper divisors (201933390067160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155025151142440 is a wasteful number, since it uses less digits than its factorization.

155025151142440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10143986 (or 10143982 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 40.

The spelling of 155025151142440 in words is "one hundred fifty-five trillion, twenty-five billion, one hundred fifty-one million, one hundred forty-two thousand, four hundred forty".