154455964840 has 32 divisors (see below), whose sum is σ = 347537553480. Its totient is φ = 61780317952.

The previous prime is 154455964801. The next prime is 154455964841. The reversal of 154455964840 is 48469554451.

It can be written as a sum of positive squares in 4 ways, for example, as 132957953956 + 21498010884 = 364634^2 + 146622^2 .

It is not an unprimeable number, because it can be changed into a prime (154455964841) 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, 1833894 + ... + 1916266.

Almost surely, 2^154455964840 is an apocalyptic number.

154455964840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154455964840 is an abundant number, since it is smaller than the sum of its proper divisors (193081588640).

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

154455964840 is a wasteful number, since it uses less digits than its factorization.

154455964840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129261 (or 129257 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 55.

The spelling of 154455964840 in words is "one hundred fifty-four billion, four hundred fifty-five million, nine hundred sixty-four thousand, eight hundred forty".