26121201556152 has 128 divisors (see below), whose sum is σ = 65596018752000. Its totient is φ = 8668115140608.

The previous prime is 26121201556141. The next prime is 26121201556159. The reversal of 26121201556152 is 25165510212162.

It is a happy number.

It is a super-3 number, since 3×26121201556152³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26121201556152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26121201556159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16254636133 + ... + 16254637739.

It is an arithmetic number, because the mean of its divisors is an integer number (512468896500).

Almost surely, 2^{26121201556152} is an apocalyptic number.

It is an amenable number.

26121201556152 is an abundant number, since it is smaller than the sum of its proper divisors (39474817195848).

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

26121201556152 is a wasteful number, since it uses less digits than its factorization.

26121201556152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525 (or 4521 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 39.

The spelling of 26121201556152 in words is "twenty-six trillion, one hundred twenty-one billion, two hundred one million, five hundred fifty-six thousand, one hundred fifty-two".