21506070743002 has 32 divisors (see below), whose sum is σ = 34035618355200. Its totient is φ = 10163496510000.

The previous prime is 21506070742991. The next prime is 21506070743137. The reversal of 21506070743002 is 20034707060512.

It is a happy number.

It is a super-2 number, since 2×21506070743002² (a number of 27 digits) contains 22 as substring.

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, 80884377 + ... + 81149827.

It is an arithmetic number, because the mean of its divisors is an integer number (1063613073600).

Almost surely, 2^{21506070743002} is an apocalyptic number.

21506070743002 is a deficient number, since it is larger than the sum of its proper divisors (12529547612198).

21506070743002 is a wasteful number, since it uses less digits than its factorization.

21506070743002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270402.

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 21506070743002 in words is "twenty-one trillion, five hundred six billion, seventy million, seven hundred forty-three thousand, two".