20761266070155 has 64 divisors (see below), whose sum is σ = 36219806138880. Its totient is φ = 10093451698176.

The previous prime is 20761266070091. The next prime is 20761266070157. The reversal of 20761266070155 is 55107066216702.

It is not a de Polignac number, because 20761266070155 - 2⁶ = 20761266070091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20761266070157) 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, 37582507 + ... + 38130923.

It is an arithmetic number, because the mean of its divisors is an integer number (565934470920).

Almost surely, 2^{20761266070155} is an apocalyptic number.

20761266070155 is a deficient number, since it is larger than the sum of its proper divisors (15458540068725).

20761266070155 is a wasteful number, since it uses less digits than its factorization.

20761266070155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550860.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 20761266070155 in words is "twenty trillion, seven hundred sixty-one billion, two hundred sixty-six million, seventy thousand, one hundred fifty-five".