1261376063000 has 64 divisors (see below), whose sum is σ = 2951947065600. Its totient is φ = 504494515200.

The previous prime is 1261376062993. The next prime is 1261376063089. The reversal of 1261376063000 is 3606731621.

It is a congruent number.

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, 9631961 + ... + 9762039.

It is an arithmetic number, because the mean of its divisors is an integer number (46124172900).

Almost surely, 2^{1261376063000} is an apocalyptic number.

1261376063000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1261376063000 is an abundant number, since it is smaller than the sum of its proper divisors (1690571002600).

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

1261376063000 is a wasteful number, since it uses less digits than its factorization.

1261376063000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139797 (or 139783 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The spelling of 1261376063000 in words is "one trillion, two hundred sixty-one billion, three hundred seventy-six million, sixty-three thousand".