23421536273402 has 4 divisors (see below), whose sum is σ = 35132304410106. Its totient is φ = 11710768136700.

The previous prime is 23421536273351. The next prime is 23421536273453. The reversal of 23421536273402 is 20437263512432.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (23421536273351) and next prime (23421536273453).

It can be written as a sum of positive squares in only one way, i.e., 14797570191121 + 8623966082281 = 3846761^2 + 2936659^2 .

It is a super-2 number, since 2×23421536273402² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5855384068349 + ... + 5855384068352.

Almost surely, 2^{23421536273402} is an apocalyptic number.

23421536273402 is a deficient number, since it is larger than the sum of its proper divisors (11710768136704).

23421536273402 is a wasteful number, since it uses less digits than its factorization.

23421536273402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11710768136703.

The product of its (nonzero) digits is 1451520, while the sum is 44.

Adding to 23421536273402 its reverse (20437263512432), we get a palindrome (43858799785834).

The spelling of 23421536273402 in words is "twenty-three trillion, four hundred twenty-one billion, five hundred thirty-six million, two hundred seventy-three thousand, four hundred two".