1045561450640 has 80 divisors (see below), whose sum is σ = 2778486665472. Its totient is φ = 358442015232.

The previous prime is 1045561450603. The next prime is 1045561450651. The reversal of 1045561450640 is 460541655401.

It is a tau number, because it is divible by the number of its divisors (80).

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, 5783702 + ... + 5961738.

Almost surely, 2^{1045561450640} is an apocalyptic number.

1045561450640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1045561450640 is an abundant number, since it is smaller than the sum of its proper divisors (1732925214832).

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

1045561450640 is a wasteful number, since it uses less digits than its factorization.

1045561450640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188544 (or 188538 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 1045561450640 in words is "one trillion, forty-five billion, five hundred sixty-one million, four hundred fifty thousand, six hundred forty".