154056554505 has 128 divisors (see below), whose sum is σ = 331931520000. Its totient is φ = 66180022272.

The previous prime is 154056554489. The next prime is 154056554527. The reversal of 154056554505 is 505455650451.

It is a happy number.

154056554505 is a `hidden beast` number, since 1 + 5 + 40 + 5 + 6 + 554 + 50 + 5 = 666.

It is not a de Polignac number, because 154056554505 - 2⁴ = 154056554489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10804621 + ... + 10818869.

It is an arithmetic number, because the mean of its divisors is an integer number (2593215000).

Almost surely, 2^154056554505 is an apocalyptic number.

154056554505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

154056554505 is an abundant number, since it is smaller than the sum of its proper divisors (177874965495).

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

154056554505 is a wasteful number, since it uses less digits than its factorization.

154056554505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14960 (or 14954 counting only the distinct ones).

The product of its (nonzero) digits is 1500000, while the sum is 45.

The spelling of 154056554505 in words is "one hundred fifty-four billion, fifty-six million, five hundred fifty-four thousand, five hundred five".