1246601400261 has 64 divisors (see below), whose sum is σ = 2054552947200. Its totient is φ = 656096403456.

The previous prime is 1246601400229. The next prime is 1246601400389. The reversal of 1246601400261 is 1620041066421.

It is not a de Polignac number, because 1246601400261 - 2⁵ = 1246601400229 is a prime.

It is a super-2 number, since 2×1246601400261² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1246601410261) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7275585 + ... + 7444953.

It is an arithmetic number, because the mean of its divisors is an integer number (32102389800).

Almost surely, 2^{1246601400261} is an apocalyptic number.

It is an amenable number.

1246601400261 is a deficient number, since it is larger than the sum of its proper divisors (807951546939).

1246601400261 is a wasteful number, since it uses less digits than its factorization.

1246601400261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169838.

The product of its (nonzero) digits is 13824, while the sum is 33.

Adding to 1246601400261 its reverse (1620041066421), we get a palindrome (2866642466682).

The spelling of 1246601400261 in words is "one trillion, two hundred forty-six billion, six hundred one million, four hundred thousand, two hundred sixty-one".