1043651215640 has 32 divisors (see below), whose sum is σ = 2561689348560. Its totient is φ = 379509532800.

The previous prime is 1043651215639. The next prime is 1043651215661. The reversal of 1043651215640 is 465121563401.

It is a junction number, because it is equal to n+sod(n) for n = 1043651215594 and 1043651215603.

It is a congruent number.

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, 1185966851 + ... + 1185967730.

Almost surely, 2^{1043651215640} is an apocalyptic number.

1043651215640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1043651215640 is an abundant number, since it is smaller than the sum of its proper divisors (1518038132920).

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

1043651215640 is a wasteful number, since it uses less digits than its factorization.

1043651215640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371934603 (or 2371934599 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 1043651215640 in words is "one trillion, forty-three billion, six hundred fifty-one million, two hundred fifteen thousand, six hundred forty".