1201854971440 has 40 divisors (see below), whose sum is σ = 2796490999728. Its totient is φ = 480367246080.

The previous prime is 1201854971431. The next prime is 1201854971477. The reversal of 1201854971440 is 441794581021.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5752071 + ... + 5957350.

Almost surely, 2^{1201854971440} is an apocalyptic number.

1201854971440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201854971440 is an abundant number, since it is smaller than the sum of its proper divisors (1594636028288).

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

1201854971440 is a wasteful number, since it uses less digits than its factorization.

1201854971440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11710717 (or 11710711 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 1201854971440 in words is "one trillion, two hundred one billion, eight hundred fifty-four million, nine hundred seventy-one thousand, four hundred forty".