15213041118781 has 16 divisors (see below), whose sum is σ = 17573595390720. Its totient is φ = 13015533473280.

The previous prime is 15213041118727. The next prime is 15213041118827. The reversal of 15213041118781 is 18781114031251.

It is a cyclic number.

It is not a de Polignac number, because 15213041118781 - 2³³ = 15204451184189 is a prime.

It is a super-2 number, since 2×15213041118781² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15213041118181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522741 + ... + 5540698.

It is an arithmetic number, because the mean of its divisors is an integer number (1098349711920).

Almost surely, 2^{15213041118781} is an apocalyptic number.

15213041118781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15213041118781 is a deficient number, since it is larger than the sum of its proper divisors (2360554271939).

15213041118781 is a wasteful number, since it uses less digits than its factorization.

15213041118781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6076884.

The product of its (nonzero) digits is 53760, while the sum is 43.

The spelling of 15213041118781 in words is "fifteen trillion, two hundred thirteen billion, forty-one million, one hundred eighteen thousand, seven hundred eighty-one".