61533336356542 has 32 divisors (see below), whose sum is σ = 95331918228480. Its totient is φ = 29757169506240.

The previous prime is 61533336356521. The next prime is 61533336356543. The reversal of 61533336356542 is 24565363333516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61533336356543) 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, 1106308809 + ... + 1106364427.

It is an arithmetic number, because the mean of its divisors is an integer number (2979122444640).

Almost surely, 2^{61533336356542} is an apocalyptic number.

61533336356542 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

61533336356542 is a deficient number, since it is larger than the sum of its proper divisors (33798581871938).

61533336356542 is a wasteful number, since it uses less digits than its factorization.

61533336356542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65536.

The product of its digits is 52488000, while the sum is 55.

The spelling of 61533336356542 in words is "sixty-one trillion, five hundred thirty-three billion, three hundred thirty-six million, three hundred fifty-six thousand, five hundred forty-two".