1261255375060 has 48 divisors (see below), whose sum is σ = 2852949076992. Its totient is φ = 467000582400.

The previous prime is 1261255375049. The next prime is 1261255375117. The reversal of 1261255375060 is 605735521621.

It is a super-2 number, since 2×1261255375060² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1261255374998 and 1261255375016.

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, 44209281 + ... + 44237800.

It is an arithmetic number, because the mean of its divisors is an integer number (59436439104).

Almost surely, 2^{1261255375060} is an apocalyptic number.

1261255375060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1261255375060 is an abundant number, since it is smaller than the sum of its proper divisors (1591693701932).

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

1261255375060 is a wasteful number, since it uses less digits than its factorization.

1261255375060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88447144 (or 88447142 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 1261255375060 in words is "one trillion, two hundred sixty-one billion, two hundred fifty-five million, three hundred seventy-five thousand, sixty".