70271721543 has 16 divisors (see below), whose sum is σ = 103520491776. Its totient is φ = 42175013760.

The previous prime is 70271721503. The next prime is 70271721551. The reversal of 70271721543 is 34512717207.

It is not a de Polignac number, because 70271721543 - 2¹² = 70271717447 is a prime.

It is a super-2 number, since 2×70271721543² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70271721503) 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, 29952673 + ... + 29955018.

It is an arithmetic number, because the mean of its divisors is an integer number (6470030736).

Almost surely, 2^70271721543 is an apocalyptic number.

70271721543 is a deficient number, since it is larger than the sum of its proper divisors (33248770233).

70271721543 is a wasteful number, since it uses less digits than its factorization.

70271721543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59907734.

The product of its (nonzero) digits is 82320, while the sum is 39.

The spelling of 70271721543 in words is "seventy billion, two hundred seventy-one million, seven hundred twenty-one thousand, five hundred forty-three".